Book-shelf.



T. 0. PETERSEN & E. .A. EKEDAHL.

BOOK SHELF.

APPLICATION FILED NOV. 2, 1908.

Patented May 18', 190 9.

FIG.

INVENTORS.

/ amofl E AWMA FIG. 7

FIG .6

WITNESSES. a 02. ff%

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TED STATES THOMAS C. PETERSEN AND ERIK A. EKEDAHL, OF JAMESTOWN, NEW YORK, ASSIGNORS TO ART METAL CONSTRUCTION COMPANY, OF JAMESTOWN, NEW YORK, A CORPORATION OF NEW YORK.

BOOK-SELF.

Specification of Letters Patent.

Patented m 18, 1909.

To all whom it may concern:

Be it known that we, THOMAS CARL PE- TERSEN and ERIK A. EKEDAHL, residents of Jamestown, in the county of Chautauqua and State of New York, have invented a new and useful .Im rovement in Book-Shelves and we do here y declare the following to be a full,-clear, and exact description thereof.

Our invention relates to roller book shelves which consists essentially in a skeleton frame with anti-friction rollers arranged therein to permit of the ready insertion and withdrawal of heavy books.

The object of our invention is to provide for the construction of such shelves without the employment of rivets whereby a more accurate shelf can be formed as the hammering necessary in riveting is dispensed with and the parts are interlocked in such a manner as to .be readily assembled with practicall no hammering, so that after the parts have con seplarately japanned the parts, as well asthe ro ers, may be readily assembled without injuring the finish.

To these ends our invention comprises the novel features hereinafter set forth and claimed. p

In the accompanying drawings Figure 1 is a view of a case partly broken away showing our improved shelf as applied thereto; Fig. 2 is an enlarged perspective view of the shelf removed; and Figs. 3, 4, 5, 6 and 7 are enlarged details.

In the drawings the numeral 2 designates a portion of a suitable case formed of sheet metal of proper gage and adapted to receive a number. of shelves. The shelves are com.- posed of a skeleton frame work made up of 'ars of suitable thiokness and said frames comprise the front cross bar 4, the rear bar 5, the outer front-to-resir bars 6 and the inner front-to-rear bars 7. The outer front-torear bars 6 have at their inner ends the downwardly projecting hook or end portions 8 which are adapted to enter openings 9 in the rear wall of the case 2. fIn this way the inner end of the shelf is supported, while the shelf is supported at the outer end by the front cross-bars 4 which have the extensions 10 with theinwardly rojecting ends 11 having openings 12 whic receive the screws 13 adapted to secure the front cross-bars to the sides of the case 2. In this manner the shelf is held securely in position and owing to the hooked inner endportions of the outer front- ,openings 15 in the outer front-to-rear bars,

the hook portions being readily insertible within the openings 15 in assembling the shelf.

The inner front-to-rear bars 7 have hook .portions 16 which are ada ted to enter open ings 17 in the rear crossar 5 in the same manner.. Intermediate cross-bars 18 connect the outer and inner frdnt-to-rear bars 6 and 7, said intermediate bars having hook portions 19 adapted to enter openings 20 in the front to rear bars.

Toward the front of the shelf is the crossbar 21 which has hook portions 22 adapted to engage openings 23 in the inner front-to-rear bars 7.

The front cross-bar 4 has formed in it the notches 24 and on one sideof each notch is the teat 25 and on the other side of the notch the seat or depression 26. These notches areformed at intervals to receive the outer ends of the front-to-rear bars 6 and 7, andIsaid front-to-rear bars are provided with notches 27. Just above the notches 27 in the bars 6 and 7 on one side thereof are the seats or de ressions 28 and on the opposite sides of said bars are the projections 29. The projection 29 may be formed by the -formation of the de ression in the opposite side of the bar, said ar being stamped with a suitable tool which will form the depression and'at the same time cause the metal to protrude slightly on the opposite side to form the projeotion 29. The notches 27 of the front-torear bars 6 and 7 are deeperthan the notches 24 of the front cross-bar.

In assembling the. arts of the shelf the bars are first japaniie as well as the rollers 30. I The bars with the hook" portions are inserted in-corres onding o enin s while the rollers 30 are a so inserte in t e openings formed for them in the front-to-rear bars. The parts are readily put together in this way and the last parts to be connected are the front-to -rear bars with the front crossbar 4. The parts having been assembled in the way described thenotches of the front cross-bar and the notches of thefront-to-rear bars will coincide so that by a blow adminthat portion of the front bar in line with the notches 24 formed in said front bar and at the same time the teat 25 will enter the seat or de ression 26 in the frontto-rear crossbar w e the projection 29 on the front-torear bar will enter the seat or recess 26 in the notch 24. Then per ed es of the front-torear bars will be ush wit the upper edge of the front cross-bar and a very t' ht, secure ioint is obtained which is not liab e to work oose and consequently a stron rigid shelf is provided with all the parts he d firmly together without the employment of rivets. AS the only hammering required to connect the parts is that required at the last to unite theouter ends of the front-to-rear bars with the front cross-bar, which can be done with one blow, there is no liability of the distorting or throwing of the frame out of true by the connectingof the several parts. Where the parts are connected together by rivets more -or p less bending or dlstortion of the bars occur. Furthermore, the rollers had to be j apanned separately and inserted after the frame had been assembled. This necessitated the bending of the bars somewhat to insert the rollers. By our invention, however, all this is obviated as the parts may be ljlapanned separately and assembled, to-

or with the rollers, without any undue ammering. or bendin of the metal which would in any way ten to mar the-finish.

The front cross bar is provided with the reentrant band 31 which provides means for the insertion of the hand to gras the book in withdrawing same from the she a It is apparent that the arrangement of the rolls and other parts may be varied to suit conditions and we wish to include within our invention any such modified forms of construction.

' What we claim is:'

- 1'. A roller bookshelf comprising a skeleton frame composed of interlocking bars and rollers journaled therein.

2. A roller book shelf comprising a skele= notches forme notched to enga each other, and rollers 'journaled in said are.

3. A roller book shelf comprising a skeleton frame composed of bars, said bars being notched to engage each other and a teat in one notch adapted to engage a seat formed in the other bar.'

4. A roller book shelf comprising a skele ton frame composed of bars, said bars being notched toengage each other, and a teaton one bar adapted to engage a seat in the notch of the other bar.

5. A roller book shelf comprising a skeleton frame composed of bars, said bars being notched to engage each other, a teat inthe notch of one bar adapted to engage a seat formed in the other bar, and vice versa.-

6. A roller book shelf comprisin a skeleton frame composed of bars and r0 ers journaled therein,.said bars being notched to engage each other, the notch in one bar being eeper than the notch in the other bar, whereb flush with each other.

7. A'roller bookshelf comprising a skeleton frame composed of bars, hook portions on some of said bars engaging openings in other bars, the front cross bar having notches formed therein, the front-to-rear bars having notches formed therein, whereby said front bar and front-to-rear bars are connected together.

8. A roller book shelf comprising a skeleton frame composed of a rear cross-bar having hook end portions, front-to-reanbars having openings therein adapted to be engaged by said hook end portions, a front cross-bar havin notches formed therein, and

f in the outer ends of said front-to-rear bars, whereby said front cross- '75 the upper edges of said bars are bar and front-to-rear bars are connected together.

In'testimony whereof, we the said THOMAS CARL PETERSEN and ERIK A. EKEDAHL have hereunto set our hands. I

THOMAS C. PETERSEN. ERIK EKEDAHL.

' Witnesses:

F. R. RIDELL, LINooLN D. M. S' rmnus'. 

